Restarting lightdm seems to fix it, if this is the same problem described here:
http://askubuntu.com/questions/498968/ctrl-alt-t-stopped-working- ubuntu-14-04 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1292113 Title: CTRL+ALT+T - shortcut to open Terminal is does not work To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-terminal/+bug/1292113/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs